Method and device for microwave-heating prepared meals...

Details Method and device for microwave-heating prepared meals... Method and device for microwave-heating prepared meals...

2005-06-14

2005-06-14

Fuqua, Shawntina (Department: 3742)

Electric heating

Microwave heating

Tunnel furnace

C219S757000, C219S746000, C219S691000, C219S695000, C219S745000, C219S693000, C219S750000

Reexamination Certificate

active

06906297

ABSTRACT:
Trays placed in an autoclave are coupled with microwaves from microwave generators and move back and forth as they are processed to ensure even heating. The generators are placed at the side of the autoclave so each generator connects to a wave guide in the autoclave with upwardly directed decoupling openings immediately below the tray to be heated. The distance between the decoupling opening and the tray is maintained at less than one-half wavelength. The foods on the tray are heated first from below and then the heat rises. When water in the lower food layers is heated, steam forms and must pass through the cooler upper layers to escape. As it does so, it loses heat to these layers, warming them and preventing scorching on the food's surface as well as any bursting of the trays' seal.

REFERENCES:
patent: 3974353 (1976-08-01), Goltsos
patent: 5436432 (1995-07-01), Cyr

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